|
|
本帖最后由 yyj 于 2018-1-30 11:01 编辑
; ^+ Z1 x" M' K! l! Q3 B+ _- [code]EDMA sample test application
0 Z7 X% u) S2 X# M- x2 E0 a - /*
- ?$ c7 |& ?, D+ Q9 ^ v. Z* l - * edma_test.c6 |1 d+ X) T# [% A- H0 a
- *
4 k& m3 y* E' |; X: ]2 S( q - * brief EDMA3 Test Application/ {" U4 V' I+ V' x7 {% r; K6 y
- *9 k* M4 r/ i( U7 w6 P
- * This file contains EDMA3 Test code.
; J% p! ^. |; k' K( @$ |. {' @ - *! v" F1 B, R+ W# X6 u; f7 k3 C
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE. P! T3 u; g+ {/ A$ h: O8 G8 l
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 Y# J' F' c& h7 E& K) j) Y, e
- * TO CHANGE.
" h$ }: @: Q+ Q: {7 L7 b - *
* M# Q! I1 T1 {7 u; X+ j( i% x - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; O$ v& Y. Q2 W8 d" P. l9 ]
- *0 | ]7 F1 u/ b
- * This program is free software; you can redistribute it and/or0 s, c% [0 E1 S/ U( F7 U
- * modify it under the terms of the GNU General Public License as
* u3 m# L6 }. B S) c7 m& y - * published by the Free Software Foundation version 2.
: C# a, K0 f) B3 q$ j2 F - *, _' k/ H' z. T, p" C& r' z2 P' O
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any) X0 y7 \3 V+ f' {" i+ t* z' S+ m
- * kind, whether express or implied; without even the implied warranty/ N; Z4 T3 O/ ?/ ~" I1 G2 F
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the: H, q& l& P$ X4 _8 v
- * GNU General Public License for more details.! O- b" O* y% |5 o9 f% P& o: A9 p
- */
' H. Q0 v' S; y/ a
4 @% c3 o/ i. g- #include <linux/module.h>
) D$ Z) b) f. b+ X* x6 b. h, x - #include <linux/init.h>
- U: |% u& R F# d& k' X9 k - #include <linux/errno.h>" L( O1 X) u6 V5 i
- #include <linux/types.h>4 D& O1 V0 [0 r2 X, }' N# c
- #include <linux/interrupt.h>
3 }0 N9 U5 p" f - #include <asm/io.h>
" f8 R, F$ T. t8 v0 M - #include <linux/moduleparam.h>
2 Q; U) C/ }. q# l4 W u# n - #include <linux/sysctl.h>
$ u% f( ?! Q+ z. h - #include <linux/mm.h>3 \; V7 N& ]/ p l
- #include <linux/dma-mapping.h>" p4 t; ^2 D( O# |6 ? _: [2 k
9 Z. B4 ]2 x( o- W# `- #include <mach/memory.h>
+ g5 q6 G; m9 W5 m3 v - #include <mach/hardware.h>
+ b+ S9 c: C$ l& ^ X - #include <mach/irqs.h>
5 o; B6 G' g( { g8 R" { - #include <asm/hardware/edma.h>
0 [0 f- r: A$ \ - : X+ |1 d6 ^. x
- #undef EDMA3_DEBUG
! w' S! i3 t" f5 g6 ] - /*#define EDMA3_DEBUG*/3 l0 }9 n* d7 ]) q- Q
$ C9 |1 o- [% z8 A- #ifdef EDMA3_DEBUG
/ j" ~7 G. P' H4 q( O" J- z - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
9 W! }7 h4 C: `/ x7 c - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
* ~8 E8 \- X$ T) l/ g/ D% L - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)# X) I$ w" _: z2 P
- #else
: q' ^8 S$ y* g% ^ - #define DMA_PRINTK( x... )
- }& X# o8 f6 ~4 m: p' Y - #define DMA_FN_IN
+ E) M& w1 R' e3 f( m! [( z - #define DMA_FN_OUT
. p. p$ a+ Q0 `+ g - #endif
/ m7 o; a, s9 w; t& o
; H, h8 N$ u. m0 d5 P& m+ P) d/ j1 I- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
- A* f2 [1 V# s* Z - #define STATIC_SHIFT 3
& M+ @" I5 F6 s. ` - #define TCINTEN_SHIFT 20
! u1 z: s9 G7 N - #define ITCINTEN_SHIFT 21/ o- j( z I) p. l+ [$ R
- #define TCCHEN_SHIFT 22
0 W! t( m5 H% ^, {0 l/ z - #define ITCCHEN_SHIFT 23# I p" {: b: G
- 8 B5 n" x+ v+ V2 B; ^
- static volatile int irqraised1 = 0;1 ] D& p8 C/ k7 W0 L
- static volatile int irqraised2 = 0;8 `$ W3 R6 B5 e( o3 | g( |
- " Q& ~- B) H- s: c
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ E: N* L5 q3 M: R
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
4 `4 O1 X# Y1 `) Q! I/ L0 f+ I - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: G: B: Z- W. J% w
- " f! a# j) ^7 k8 B0 A
- dma_addr_t dmaphyssrc1 = 0;
8 V5 p j' H$ \* I, @- p' [ - dma_addr_t dmaphyssrc2 = 0;/ l; z( R, V' [& _0 j
- dma_addr_t dmaphysdest1 = 0;
' [6 ?+ \% W2 K% s2 m t - dma_addr_t dmaphysdest2 = 0;
. K% Y6 D3 f, ^& b - ) e: `+ T7 W0 I5 n
- char *dmabufsrc1 = NULL;
6 f# d7 x3 `, C m - char *dmabufsrc2 = NULL;
; [% e2 H# Q; L- Y* r - char *dmabufdest1 = NULL;
) m/ d" i2 b5 C" p" F. {5 Q - char *dmabufdest2 = NULL;
9 L: ?/ } c' A% J5 _
( ?+ D3 M* j! E6 @' K- static int acnt = 512;
9 }- g/ Q1 A0 ^/ m4 E - static int bcnt = 8;: x8 S1 O+ {, j* [5 O" R% J% \
- static int ccnt = 8;
4 a" t9 d. ?! c' ~$ f8 X# Q& a
) o/ a8 t. y) l5 {8 U- module_param(acnt, int, S_IRUGO);( }, Y- B6 o# T% s! o. y
- module_param(bcnt, int, S_IRUGO);0 Q; t8 Y3 A1 Q7 E& v
- module_param(ccnt, int, S_IRUGO);
复制代码
0 M! m; s0 G: w+ p3 d: M4 ~3 `
& R! O! v; P/ z0 p* }! L 这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分,我在编译的过程中是用
8 B- N' z# `1 Y. @arm-none-linux-gnueabi-gcc -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译,但是报的错误特别多,我又试着一个函数一个函数往进加,仍然是很多错误。
" {, d. t* {8 A3 Z 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。9 x5 n5 ^* P+ Y
; t0 ~' q& e7 p5 U+ T( u" N1 z
2 A" n/ s2 C+ h7 m, H! L |
|